NIFTY expiry 25 August 2026: what the 24,250 options did in the last 30 minutes
On Tuesday 25 August 2026 the NIFTY strike nearest the index at 15:00 was 24,250. The index went from 24,253 at 15:00 to 24,334 at 15:30, up 82 points across the settle walk.
The at-the-money legs, 15:00 to 15:30
| Leg | 15:00 | High | Low | 15:30 | End vs 15:00 | Open interest |
|---|---|---|---|---|---|---|
| 24,250 CE | ₹32.5 | ₹84.7 15:30 | ₹20.7 15:15 | ₹84.4 | 2.6× | 17.4M → 7.0M |
| 24,250 PE | ₹20.8 | ₹25.6 15:00 | ₹0.1 15:29 | ₹0.1 | worthless | 16.6M → 14.0M |
Premium of the strike nearest the index at 15:00, sampled every ten seconds from the NSE option chain. Index values are the chain's own quote. Dotted verticals mark a pin-book flip on Gamma Terrain.
What happened
The 24,250 call was ₹32.5 at 15:00. It reached ₹84.7 at 15:30, 2.6× its 15:00 price. It ended at ₹84.4, 2.6× the 15:00 price. Open interest at the strike went from 17.4 million to 7.0 million, so positions were closed through the window.
The 24,250 put was ₹20.8 at 15:00. Its high was ₹25.6 at 15:00. Its low was ₹0.1 at 15:29, less than half of where it started the half hour. It ended at ₹0.1, worthless. Open interest at the strike went from 16.6 million to 14.0 million, so positions were closed through the window.
For context, across 21 NIFTY and SENSEX expiries measured to 2026-09-08, 15 of 42 at-the-money legs doubled at some point in this window, 26 lost half, and 13 ended at or above their 15:00 price. This page states what the tape did. It is not a recommendation to buy or sell anything.
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